I was given a hot tub and want to put it right behind my house. I live in Michigan, so the ground freezes, what's my best foundation option? I'm thinking of a concrete slab, but I hear that might cause mildew under the tub, I am worried about the concrete shifting, cracking, or since it will but against my house, causing problems there. I am also thinking of digging up the grass, putting down that black plastic stuff, filling it in with sand or paver base (any recommends there) and then using four large square stones, like they use for A/Cs (any suggestions on another stone type?) and then filling the rest in with that white landscape gravel. With that option though, I’m concerned that the weight of the tub will shift the ground and become unleveled, and I'd have to empty the tank, remove the lines, to level it out again. Has anyone have issues with that? I am also going to put an aluminum or PVC material roof over the area (any suggestions?) Something light and translucent, just a cap though, no sides, to keep snow from falling on me when I'm in it in the winter. I will probably need to cement two posts for this and attach the other to the house. I was also going to build a back surround out of that new vinyl decking material. Just something to be able to set stuff (drinks) on, or to sit on and keep your legs, and will also be a privacy barrier from my neighbors too. Why not just build a deck, well I'd like to keep the tub as low to the ground as I can for privacy reasons. Lots of info I know, but please help me out, I've been struggling with options while this tub isn't being used, and soon enough it will be fall, what other options do you all suggest?
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